612 research outputs found
Methodology to assess vulnerability of roads under hydrogeological events
No full textFor a long time the reliability of a road net under calamitous events has been ignored into the management process. Nevertheless road nets have a very important and critical role into the different steps of emergency management.
Indeed, to assess the vulnerability of a road net before that a calamitous evet occurs it is necessary, not only to realize emergency and recovery plans, but also to plan apposite adjustment interventions on the net.
Nowadays literature shows different methodologies to assess the seismic vulnerability of a road section. We do not have the same informations to evaluate the hydrogeological vulnerability cause of interactive elements complexity.
This paper shows the initial phase of a wider research aimed to the definition of a criterion for the valuation of the qualitative and quantitative vulnerability of a road section to hydrogeological events.
The first step is the creation of tecnical check-lists that allow to define a qualitative level (low or high) of the vulnerability of a road section and so consequently to assess the reliability and to plan apposite adjustment interventions of the net.
The work has been lead and validated through the study of a case record of hydrogeological nature events that interested some roads in the past
La gestione e la manutenzione delle infrastrutture viarie: il degrado del sistema e gli interventi di recupero, di adeguamento e di potenziamento
No full text
The purchasing decision-making process in scholastic educational travel
No full textIn the tourism market, the educational segment has experienced significant growth, and a continued increase is expected in the future. Field research was carried out on this important phenomenon in which tourism and education collide. This study investigates the demand side of educational travel, particularly the purchasing decision-making process in Sardinian schools. The model of “buying centre”, theorised by Webster and Wind (1972) for the industry sector, is considered suitable for this research. This study examines schools as buying centres, and the individuals intervening in the decision-making process and their roles in Sardinian schools are tested using questionnaires and two focus group discussions. This analysis is important for the selection of educational products suitable for the school actors that intervene in the decision-making process, and it provides a model that may be applied in other school environments around the world
Mother yeast as a successfully entrepreneurial innovation: the case history of Porta1918
No full textThe purpose of this contribution is to highlight how heritage represents, in some cases, the main company innovation on which to build its competitive success. To do this goal a case study was chosen for a small company that makes baked goods in a small town in Sardinia, from which it emerges that the "roots" were the main innovation to face the current challenges, but accompanied by the "wings as "knowledge, technology, openness to relationships with other actors in the context. The approach followed is of a qualitative narrative type and the case history is constructed through a mix of sources
Measurements in a Carousel (Metingen in een Carrousel)
No full textThis report is essentially a report of the measurements in the carousel of the laboratory for Fluid Mechanics of the Delft University of Technology made accessible for a slightly wider public. A comprehensive documentation about the considered investigation, both concerning the theoretical background and concerning the elaboration of the experimental evidence can be found in: Booij, R., (1994), "Measurements of the flow field in a rotating annular flume ", Communications on Hydraulic and Geotechnical Engineering, report no. 94-2, Laboratory for Fluid Mechanics, Faculty of Civil Engineering, Delft University of Technology. To make the report more widely accessible a short explanation and description of the contents of every subdivision in English is added. The original text in Dutch by M.M.L. Melis is retained because an integral translation would be too time consuming. The added pages with English text are numbered El, etc.Hydraulic EngineeringCivil Engineering and Geoscience
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